Answer: Option (A) and (D) are the correct statements.
Explanation:
Potential energy is defined as the energy obtained by an object due to its position. Whereas kinetic energy is defined as the energy obtained by an object due to the motion of its molecules.
When there will be only one phase present then addition or removal of energy will lead to change in kinetic energy of the substance but no change in potential energy will take place.
Whereas if change in phase is occurring then adding or removing any energy will lead to change in potential energy of the substance while kinetic energy will remain the same.
Thus, we can conclude that correct statements are as follows.
- While only one phase is present, adding or removing energy changes PE but not KE.
- During a phase change, adding or removing energy changes PE but not KE.
Answer:
The direction of current in the second wire will be upward.
Explanation:
We first need to find the direction of the magnetic field due to the first wire using the right-hand thumb rule.
Knowing that, one can easily find the direction of the second wire by using the right-hand rule.
The force per unit length on wire 2 due to wire 1 is given by,
Therefore,
<em>Image attached for better understanding of the problem.</em>
<em>(Source: http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/wirfor.html)</em>
Answer:
a) (1.4 + 1.9) = 3.3m/sec.
(35/3.3) = 10.6 secs.
b) (1.9 - 1.4) = 0.5m/sec.
(35/0.5) = 70 secs.
Explanation:
Multi meter reading instruments Device can be used to increase voltage know direct-current
Please show me your choices
